包皮盖没尿道口,上翻能露出尿道口和阴茎头,叫包皮过长。如果包皮上翻不能露出尿道口和阴茎头,叫包茎。一、病理:新生儿及婴儿期包皮与阴茎头常为上皮所粘连,一年后上皮吸收,包皮与阴茎头分开。若上皮粘连残留或因慢性刺激形成纤维性粘连,即妨碍包皮的退缩,就形成了包皮过长或包茎。包皮过长或包茎病人危害有以下几方面: No foreskin lid urethra, the turn can reveal the urethra and penis head, called the foreskin is too long. If the foreskin can not reveal the urethra and glans penis head, called phimosis. First, the pathology: neonatal and infant foreskin and penis often epithelial adhesion, a year after the epithelium is absorbed, the foreskin and the penis head apart. If the epithelial adhesions or because of chronic formation of fibrous adhesion, which hinders the foreskin shrinkage, the formation of the prepuce or phimosis. Foreskin or phimosis patients have the following hazards: